Sukhoi Su-9 (II)


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Sukhoi Su-9 (II)

Within an unusually short timescale, the Pavel Sukhoi OKB succeeded in developing a successful limited all-weather single-seat interceptor fighter from the T-3 and its immediate derivatives. Assigned the designation Su-9, this interceptor was available to enter IA-PVO Strany service from 1961. The Su-9 was directly evolved from the T-4 series of prototypes, which, sharing the 57 delta wing and Lyulka AL-7F turbojet with the preceding prototypes, differed from one another in detail design, systems and equipment. With a single exception, the T-4 prototypes featured a circular nose intake with a translating centrebody to accommodate the S-band R1L search-and-track radar. The exception, the T-49, had a unique arrangement of box-type intakes flanking a slim, ogival nose radome.

Sukhoi Su-9 (II)

The first T-4 series prototype, apparently designated T-401, entered flight test during 1957, and, in May 1960, an essentially similar aircraft, the T-405, established a new 100km closed-circuit record of 2092km/h. The definitive fighter development, the T-43, was first flown in 1958 as the T-431, and established a zoom climb altitude record of 28,850m on 14 July 1959. Three years later, the T-431 set both a sustained altitude record of 21,170m and a 500km closed-circuit record of 2337km/h.

Series production of the T-43 as the Su-9 was launched in 1959, standard armament comprising four beam-riding K-5 AAMs on underwing pylons. Production of the Su-9 is believed to have exceeded 1,000 aircraft, and this type remained in Soviet service until the beginning of the 'eighties.

Sukhoi Su-9 (II)A three-view drawing (1670 x 1067)

  Take-off weight12000 kg26456 lb
  Empty weight8750 kg19291 lb
  Wingspan8.43 m28 ft 8 in
  Length16.70 m55 ft 9 in
  Wing area26.25 m2282.55 sq ft
  Max. speed1915 km/h1190 mph

The T-49 featured box-type intakes flanking an ogival nose radome

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bombardier, e-mail, 26.05.2011 09:52

The Su-9 was one of the few aircraft to have both a delta wing and a conventional tail


DebtMan, e-mail, 16.10.2010 03:30

The Su-9 was a development of Su-7 with delta wing designed for operate in the altitude in what the MiG-15,MiG-17,MiG-19 and Su-7 not was possible operate and was designed for shutdown the NATO high-altitude scout planes.
PS:Not be confused with the 1946 aircraft with the same name.


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